A Method for Broadband Full-Duplex MIMO Radio
- Author(s): Hua, Yingbo
- Liang, Ping
- Ma, Yiming
- Cirik, Ali C
- Gao, Qian
- et al.
We present a time-domain transmit beamforming (TDTB) method for self-interference cancelation (SIC) at the radio frequency (RF) frontend of the receivers on broadband full-duplex MIMO radios. It is shown that the conventional frequency-domain transmit beamforming (FDTB) method along with the orthogonal frequency division multiplexing (OFDM) framework does not generally perform SIC in the prefix region of a transmitted frame. A hardware based test of the TDTB method shows a 50 dB SIC over a bandwidth of 30 MHz.
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